wallet is now in sync again on osx.
it took some time to sync, and i restarted once, because i thought it won't sync.
so just let it run in case you freak out as i did :-)
no need to freak out , it works well.
Thanks fuzzbawls for the binaries.
my advice for those ppl who still need to upgrade to 3.0.1, first go to fuzzbawls block explorer
http://www.fuzzbawls.pw/explore/HOdlcoin/network.php
and grab 6 ip's that show as running v3.0.1 (click on nodes button) add them to you hodlcoin.conf or via debug window once wallet has started.
This will avoid you trying to connect to 3.0.0 nodes.
after that for me it synced without too much trouble.